London Stone

109 Cannon Street, EC4N 5AD

The London Stone formerly resided in a cage at the bottom of a now demolished building here. It is an irregular block of oolitic limestone measuring 53 x 43 x 30 cm (21 x 17 x 12 inches), the remnant of a once much larger object that had stood for many centuries on the south side of the street. The name "London Stone" was first recorded in about 1100. The date and the original function of the Stone are unknown, although it is possibly of Roman origin, and there has been speculation about it since at least the 16th century. It is said that the Romans used this stone to measure all distances in Britannia. While the new building is constructed the Stone temporarily resides in the Museum of London. Wikipedia/CTGuides